@merouanballout

Merouan Ballout

@merouanballoutCasablanca,MoroccoJoined March 2026

Database Administrator & Advocate Linux & Open Source

About

Database Administrator and Linux System Engineer with a strong background in managing critical production environments. My expertise spans across Oracle and PostgreSQL databases, along with deep hands-on experience in Linux and UNIX systems (AIX).

Available for

Freelancing, Technical Writing, and Conference Speaking

Merouan Ballout's blogs

merouan balloutmerouanballout.hashnode.dev2 posts

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Recently published

MBMerouan Balloutmerouanballout.hashnode.devMar 29 · 1 min read

PostgreSQL Autovacuum: Global Settings vs Per-Table Tuning (Complete Guide)

Autovacuum is a background process that: 🧹 Removes dead tuples (from UPDATE/DELETE) 📉 Prevents table bloat 📊 Updates statistics for the planner Without it, performance gets worse over time. 1.

MBMerouan Balloutmerouanballout.hashnode.devMar 25 · 4 min read

The Hidden Killer of PostgreSQL Performance: Understanding and Eliminating Bloat

In PostgreSQL, every UPDATE or DELETE creates dead tuples. These are old row versions that are no longer visible to any active transaction. They remain in the table and indexes until PostgreSQL’s clea

Merouan Ballout

About

Available for

Merouan Ballout's blogs

Recently published

PostgreSQL Autovacuum: Global Settings vs Per-Table Tuning (Complete Guide)

The Hidden Killer of PostgreSQL Performance: Understanding and Eliminating Bloat

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Merouan Ballout

About

Available for

Merouan Ballout's blogs

Recently published

PostgreSQL Autovacuum: Global Settings vs Per-Table Tuning (Complete Guide)

The Hidden Killer of PostgreSQL Performance: Understanding and Eliminating Bloat